... system. Material: aluminum alloy Pipe fittings are made from aluminum alloy,suitable for pipe connector/pipe fittings,such as gas station, ... and permanent mold casting (gravity or chill casting) Software for drawing: pro/E, auto CAD, UG, CAD, PDF ... milling, grinding, drilling, reaming and threading Surface finish: polishing shot blasting, chromate plating, power coated and anodizing OEM and ODM ...